metallic bonding

Question 1

metals

Answer 1

consist of giant lattices of metal ions in a sea of delocalised electrons

Question 2

metallic bonding

Answer 2

electrostatic force of attraction between the positive metal ions and the delocalised electrons

Question 3

3 main factors affecting strength of metallic bond

Answer 3

1. number of protons/strength of nuclear attraction - the more protons, the stronger the bond
2. number of delocalised electrons per atom (the outer shell electrons are delocalised) - the more delocalised electrons, the stronger the bond
3. size of ion - the smaller the ions, the stronger the bond

Question 4

why do metals have high boiling points?

Answer 4

strong electrostatic forces between positive ions and the sea of delocalised electrons require a lot of energy to break

Question 5

why can metals conduct electricity well?

Answer 5

the delocalised electrons can move through the structure and carry a charge

Question 6

why are metals malleable (able to be hammered or pressed into shape without breaking or cracking)?

Answer 6

positive ions in the lattice are all identical. so the planes of ions can slide easily over one another. the attractive forces in the lattice are the same whichever ions are adjacent